MESON Chess Problem Database
Problem Display
PID: 234012 (5R2/1p1N4/8/3pN2K/r3kp2/2Pn2Pp/2q1pPP1/1Q2R3 w - - 0 1)
Hermanson, Halvar
Il Due Mosse, 1958
#2
10 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxb1
- 2.Rxe2#
- 1...Qd1
- 2.Rxf4#
- 1...Qb3
- 2.Rxe2#
- 2.Rxf4#
- 2.Qxd3#
- 1...Qc1
- 2.Qxd3#
- 1...Qa2
- 2.Rxf4#
- 2.Qxd3#
- 1...Qb2
- 2.Rxf4#
- 2.Qxd3#
- 1...Qxc3
- 2.Rxf4#
- 1...Sc1
- 2.Rxf4#
- 1...Sxe1
- 2.Rxf4#
- 1...Sb2
- 2.Rxe2#
- 2.Rxf4#
- 1...Sxf2
- 2.Rxe2#
- 1...Sb4
- 2.Rxe2#
- 2.Rxf4#
- 1...Sc5
- 2.Rxe2#
- 2.Rxf4#
- 1...Sxe5
- 2.Sc5#
- 1...f3
- 2.gxf3#
- 1...d4
- 2.Qxb7#
- 1...Qxb1
- Tries
- 1.Sf3?
- threat
- 2.Sg5#
- 1...Qxc3
- 2.Rxe2#
- 2.Rxf4#
- 1...Sxe1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sb2
- 2.Sc5#
- 1...Sb4
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Se5
- 2.Sc5#
- 1...d4
- 2.Qxb7#
- 1...Sxf2!
- threat
- 1.Sg4?
- threat
- 2.f3#
- 1...Qxc3
- 2.Rxf4#
- 1...Sxe1
- 2.Sc5#
- 1...Sxf2
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sb2
- 2.Sc5#
- 1...Sb4
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Se5
- 2.Sc5#
- 1...d4
- 2.Qxb7#
- 1...f3
- 2.gxf3#
- 1...hxg2!
- threat
- 1.Sc5+?
- 1...Sxc5
- 2.Rxe2#
- 1...Kxe5!
- 1...Sxc5
- 1.Qxc2?
- threat
- 2.Rxe2#
- 2.Rxf4#
- 2.Qxd3#
- 2.Qxe2#
- 1...fxg3
- 2.Rxe2#
- 2.Qxd3#
- 2.Qxe2#
- 1...Ra2
- 2.Rxe2#
- 2.Rxf4#
- 2.Qxd3#
- 1...Rd4
- 2.Rxe2#
- 2.Rxf4#
- 2.Qxe2#
- 1...f3
- 2.Rf4#
- 2.Qxd3#
- 2.gxf3#
- 1...d4!
- threat
- 1.Qb4+?
- 1...Sxb4
- 2.Rxf4#
- 1...d4
- 2.Qxb7#
- 1...Rxb4!
- 1...Sxb4
- 1.Sf3?
- Keys
- 1.Qb6!
- threat
- 2.Qg6#
- 2.f3#
- 1...Qxc3
- 2.Rxe2#
- 2.f3#
- 1...Sxe1
- 2.Rxf4#
- 2.Qg6#
- 1...Sxf2
- 2.Rxf4#
- 1...Sxe5
- 2.Sc5#
- 1...d4
- 2.Qxb7#
- 1...Rd4
- 2.Qxd4#
- 2.Qg6#
- 1...Ra6
- 2.Qd4#
- 2.f3#
- 1...Sc5
- 2.Rxf4#
- 2.Qg6#
- 1...f3
- 2.Qe3#
- 2.Qg6#
- 2.gxf3#
- threat
- 1.Qb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD,XQ(A)::R(B),XP(b)
- Q(a);P_SPINS(c)::R1(J),XP(g)
- Q(a);OGATE,P_SPINS(c)::QAB1(A),XS(c)
- Q(a);P_SPINS(c),XP(E)::R1(J),XP(g)
- S(c);N_GUARD,P_SPINQ(a)::R1(J),XP(g)
- S(c);N_GUARD,N_SPINP(b),P_SPINQ(a),XR(B)::R1(J),XP(g)
- S(c);P_SPINQ(a),XP(C)::R(B),XP(b)
- S(c);N_GUARD,P_SPINQ(a),SBLOCK,XS(G)::S(I)
- P(g);OGATE::P(D),XP(g)
- P(h);OGATEB::QAB(A),XP(i)
- Tries
- Try
- S(G);
- Threat
- S(G)
- Vars
- S(c);N_GUARD,N_SPINP(b),P_SPINQ(a),XR(B)::S(I)
- S(c);N_GUARD,P_SPINQ(a)::S(I)
- S(c);N_GUARD,P_SPINQ(a)::S(I),XS(c)
- P(h);OGATEB::QAB(A),XP(i)
- Refutation
- S(c);P_SPINQ(a),XP(C)
- Try
- S(G);
- Threat
- P(C)
- Vars
- Q(a);P_SPINS(c),XP(E)::R1(J),XP(g)
- S(c);N_GUARD,N_SPINP(b),P_SPINQ(a),XR(B)::S(I)
- S(c);N_GUARD,P_SPINQ(a),XP(C)::S(I)
- S(c);N_GUARD,P_SPINQ(a)::S(I)
- S(c);N_GUARD,P_SPINQ(a)::S(I),XS(c)
- P(h);OGATEB::QAB(A),XP(i)
- P(g);OGATE::P(D),XP(g)
- Refutation
- P(d);XP(D)
- Try
- S(I);CHECK
- Vars
- S(c);P_SPINQ(a),XS(I)::R(B),XP(b)
- Refutation
- K(f);P-FLIGHT,XS(G)
- Try
- Q(A);P_PINS(c),XQ(a)
- Threat
- DUALS(4)
- Refutation
- P(h);
- Try
- Q(A);CHECK
- Vars
- S(c);XQ(A)::R1(J),XP(g)
- P(h);OGATEB::QAB(A),XP(i)
- Refutation
- R(e);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD,XP(C)::R1(J),XP(g)
- S(c);N_GUARD,SBLOCK,XS(G)::S(I)
- P(h);OGATEB::QAB(A),XP(i)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).